>> reporter: john, clashes taking place at this hour. earlier clashes took place as well. 29 people injured. minor injuries, mostly cuts and bruises according to the health ministry, important not to blow these out of proportions. we have a street a few blocks from tahrir square that leads to the interior ministry. police have erected a barrier, we have police on one side, protesters throwing rocks, and police responding by firing teargas, sometimes police are throwing rocks as well. probably not a tactic they learned at the police academy. a few blocks away, tahrir square mostly calm and ordinarily. crowds not huge, but starting to grow. a few thousand people at this hour. two years ago, egyptians started an uprising that led to the toppling of hosni mubarak. they came to tahrir square and other locations in egypt. we want our personal freedom, political freedom, a better way of life and the end to the mubarak regime. mubarak did step down. two years later, many egyptians not happy. what you have throughout the day, the secularist, mode